#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

import sys
from operator import add
from pyspark import SparkContext
from pyspark import SparkConf

if __name__ == "__main__":
    conf = SparkConf()
    sc = SparkContext(appName="PythonWordCount", conf=conf)
    lines = sc.textFile(sys.argv[1], int(sys.argv[3]))
    counts = lines.flatMap(lambda x: x.split(' ')) \
                  .map(lambda x: (str(x), 1)) \
                  .reduceByKey(add)
    counts.saveAsTextFile(sys.argv[2])
    sc.stop()